必须用风量大于71立方米每分钟的轴流型风机进行熏蒸剂循环。
An axial type fan with a capacity of at least 71 m3/min (2500CFM) must be used to circulate the fumigant.
提出了轴流通风机沿叶片叶高的载荷分布，按五次方流型设计的方法。
Load distribution of axial fan along to the blade and blade height is put forward according to dynamic design method of quintic equation.
介绍了用于最优设计的数学模型，给出了各种流型下径—轴流涡轮的单目标和多目标优化分析的一些结果。
The mathematical model for optimization and some analytical results of single- and multi-objective optimization for a variety of twisted blades are also presented in this paper.
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